The 15” Garnier Limb® (GL®) Yellow Zinc Plate is 15” long with a 9” Perch and a 1” Boss/Collar. The 9” Perch gives you an extra 3” of growth and/or you can add more Boss for higher loads.
Made from 4140 steel quenched and tempered R-28-32 hardness with Yellow Zinc Plate. Yellow Zinc protects the Garnier Limb® from excessive rust in places where there is high moisture.
The Garnier Limbs® are the foundation of a treehouse by anchoring the treehouse to a tree. All GL’s® are designed to hold the load out away from the tree in shear.
Instructional Video: https://www.youtube.com/watch?v=7ihN5_ojN6Q&t=13s